Altimeter, 35,000 FT, British RAF F6F Hellcat 25in square

25in square

this is not aviation in nature

When viewing the ground through the scope while in flight

airspeed indicator

but not guaranteed

Altimeter, 35,000 FT, British RAF F6F Hellcat 25in squareThis Altimeter, made by the British aircraft instrument manufacturer Smiths, indicates aircraft altitude up to 35,000 ft. The pointer indicates altitude from 0 20,000 ft with one 360 degree rotation, using the scale along the outer perimeter. Once past 20,000 ft, the pointer indicates altitude along the inner green scale, up to 35,000 ft. With only one pointer and markings every 2,000 ft, this would be regarded as a 'non sensitive' altimeter. The